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Wear - resistant nickel - base alloy powder for steel mill roll body

Spray-welding technology is used to provide surface strengthening and functional coating for laminar cooling roller in hot rolling mill, which effectively prolongs the service life of roller table and improves the stability of production line operation.The technology has been successfully used in baosteel, bensteel, ma steel, baosteel, lian steel, handan steel and other foreign steel mills. 

Spray welding technology is a process technology in which the self-melting alloy powder is sprayed to the surface of the workpiece after being pretreated by oxygen-acetylene flame, and the coating is heated to melt and wetting the surface of the workpiece. Through the mutual dissolution and diffusion of the liquid alloy and the solid surface of the workpiece, the metallurgical combination is realized and the dense spray welding layer is formed. 

The protective coatings with high density, high hardness and high bonding strength can be prepared on the workpiece matrix by using the proper spray welding method of self-fusing alloy.The coating has excellent performance such as abrasion resistance, corrosion resistance and heat shock resistance, which effectively prolongs the service life of the workpiece.